| Their most spend the whole life with the
same river. Therefore rigidly speaking, them are classified into the kind that differs every the river. Also in the tributary of the same river, they may be doing the figure that differs. |
| The photograph of top is the fish of same river. They are doing the figure that differs. ( Ohtorigawa Riv. September, 1998 ) |
| Their inhabitant area is the rapid current that the waterfall is continuing. They are lurking in the loose part of the flow. There is under the rock that is in the reversal flow of the basin of a waterfall and pool. |
| He was hiding under the rock of the right.
( Inagawa Riv. May, 1999.) IWA of IWANA is a rock in Japanese. . In other words, Iwana is Rock-Fish.. |
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